I'm once again going to recommend we go for a superweapon, one that can finally turn the tide in the jungle firmly in our favour. I don't expect this to work immediately, but I'd like to get started on it so that we can revise it to work in future years.
Deus ex Tempestas*: We know the storm. We control the storm. We feel the power contained within the storm. And now it is time to unleash that power.
God can be found in all things, for all things are a part of Him. The storm included. We can summon his aid, a fraction of his divine being, in the form of a towering
Storm Elemental.
The unlimited rage and unfathomable power of the storm made manifest, the Storm Elemental stands as tall as four men, made up entirely of swirling black clouds, the occasional flash of lightning running through its body. It cannot be harmed by mortal blades, for truly, when have mundane means ever been able to control the weather? It can easily harm mortals in return, though. Fists slam into enemy soldiers with all the power of a hurricane behind them, small thunderbolts leap from its torso, and men and horses alike flee before its raging bellow. Fallen branches, small rocks, and unfortunate soldiers are all whipped into the air by the towering giant, to come crashing down on enemy archers.
The Storm Elemental can only be summoned during inclement weather, obviously, and may be somewhat hard to control without the efforts of several trained mages. It is expected to be a
National Effort.
Also, can we do something about our constant losses in the mountains and
Order - Concede the Mountains: Look, guys, we aren't winning in the mountains. Stop throwing good men after bad, and let them have them- at least for now. We need the men in other theatres.
I really want to conquer the jungles, so that we can get the necessary hardwoods with which to build a fearsome
Quinquireme: We have the manpower of the plains, and the hardwoods of the jungle. Combine the two, and what do you get? A massive warship, propelled by a combination of oars and magically-powered sails. The Quinquireme is large enough to carry hundreds of soldiers, and dozens of mages. They can serve as flagships for our fleets, or as transports for our ground troops. Later, they will be able to carry several ballistas on their expansive decks. A large tower allows our archers to rain down death upon enemy longships, whilst the high sides make it difficult for the Arstotzkans to board us in return.
By augmenting our small, manoeuvrable sailing ships with a massive medieval battleship, the seas will fall firmly under our control. And once they are, the Quinquireme's transport capacity will allow us to make full use of our naval supremacy to deploy troops wherever and whenever we need them.
So, to be clear, I'm voting for
Deus ex Tempestas and
Order - Concede the Mountains. Though if people still don't feel like building a superweapon, I'd understand.
EDIT: Actually, after thinking about it some more, I doubt that DeT would succeed, in either getting enough votes, or being an even marginally successful design. We just don't have any experience with summoning 'living' things. Much as I would like to start with a big prototype and work down to mass-produced units, I feel like the GM is more likely to reward humility. So I'm changing my vote to
Creature of the Storm: Okay, so, a towering giant may be a bit ambitious. How about we start small, with a
Lesser Storm Elemental. The same height as a man, but made up of swirling black clouds, they are immune to mortal blades, which pass harmlessly through them, whilst delivering savage blows with all the force of a tornado in return.
These give us a way to hold our own in prolonged melee where our brave soldiers are usually at a disadvantage. They would only be summoned during stormy weather, and probably require the attention of a wizard to keep them under control. The first prototypes are expected to be between
Very Expensive and
A National Effort, but with practice we should hopefully be able to get them down to just
Expensive.
Also,
SoA is Very Expensive, due to requiring Storm Strike (which itself is Very Expensive - the spell cost trickles down for variants)
But surely we can cast SoA multiple times during a single storm? You can fire cheap bullets from an expensive gun. We have a group of expert mages summon the storm, then have less experienced mages summon lightning (or other things) from it.
Which is not to say that I think SoA should be Expensive, just that it should be possible to make it so without lowering the cost of Storm Strike first.